Determination of nitrogen compounds in gasoline by gas chromatography-surface ionization detector

2011 ◽  
Vol 29 (2) ◽  
pp. 141-145
Author(s):  
Weiwei LI ◽  
Kun DING ◽  
Hua WANG ◽  
Shiheng CHEN ◽  
Zheng SHEN ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Nitrogen Compounds ◽  
Surface Ionization ◽  
Ionization Detector

scholarly journals Determination of Trace Trimethylamine in Ambient Air by Headspace Gas Chromatography-Surface Ionization Detector

2007 ◽  
Vol 56 (7) ◽  
pp. 573-577 ◽  
Author(s):  
Masahiro YAMAMOTO ◽  
Naoko KURIHARA ◽  
Katsumi UCHIYAMA ◽  
Toshiyuki HOBO
Keyword(s):  
Gas Chromatography ◽  
Ambient Air ◽  
Surface Ionization ◽  
Headspace Gas Chromatography ◽  
Ionization Detector ◽  
Headspace Gas

Determination of volatile alcohols and acetone in serum by non-polar capillary gas chromatography after direct sample injection.

1984 ◽  
Vol 30 (10) ◽  
pp. 1672-1674 ◽  
Author(s):  
N B Smith
Keyword(s):  
Gas Chromatography ◽  
Capillary Gas Chromatography ◽  
Capillary Column ◽  
Internal Standard ◽  
Fused Silica ◽  
Gas Chromatograph ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Split Ratio

Abstract In this method for detection and quantification of volatile alcohols by capillary gas chromatography, the serum sample is deproteinized, then directly injected into the gas chromatograph with 1-propanol as the internal standard. The capillary column is a 30-m bonded methylsilicone-coated, fused-silica column. With helium as the carrier gas, the injector inlet is set at a split ratio of 1/30 and the average linear velocity in the column is 25 cm/s. Injector and flame-ionization detector temperatures are 280 degrees C, oven temperature 35 degrees C. Chromatography time is less than 3 min.

Rapid Gas-Chromatographic Determination of Amphetamine and Methamphetamine in Urine

1974 ◽  
Vol 20 (11) ◽  
pp. 1460-1462 ◽  
Author(s):  
Naresh C Jain ◽  
Thomas C Sneath ◽  
Robert D Budd
Keyword(s):  
Gas Chromatography ◽  
Quantitative Result ◽  
Chromatographic Determination ◽  
Flame Ionization Detector ◽  
Specific Method ◽  
Ionization Detector ◽  
Rapid Procedure ◽  
Flame Ionization ◽  
Dual Analysis

Abstract A simple, rapid procedure is described for measuring amphetamine and methamphetamine in urine by gas chromatography, with use of a flame ionization detector. This method is sensitive to subtherapeutic concentrations (0.1 µg/ml or less), and is especially useful in clinical situations where an accurate and quantitative result is needed in less than 30 min. With the method, amphetamine and methamphetamine can be determined as the free bases on a 10% Apiezon L-10% KOH column and as their trifluoroacetamide derivatives on a 3% OV-17 column. This dual analysis eliminates false positives and any interfering substances that may be present in the urine, and is thus a specific method for the two drugs.

Determination of Styrene Migration from Food-Contact Polymers into Margarine, Using Azeotropic Distillation and Headspace Gas Chromatography

1983 ◽  
Vol 66 (5) ◽  
pp. 1067-1073
Author(s):  
Sandra L Varner ◽  
Charles V Breder ◽  
Thomas Fazio
Keyword(s):  
Gas Chromatography ◽  
Azeotropic Distillation ◽  
Flame Ionization Detector ◽  
Headspace Gas Chromatography ◽  
Ionization Detector ◽  
Migration Studies ◽  
Flame Ionization ◽  
Quantitation Limit ◽  
Headspace Gas

Abstract Migration studies were conducted to determine the quantity of styrene that migrates from polymers into fatty foods, specifically margarine. Azeotropic distillation was used to isolate styrene from the margarine. Headspace gas chromatography with a Chromosorb 104 column and a flame ionization detector was used for quantitation. The quantitation limit for the method was about 25 ppb (wt/wt) styrene in margarine. On the average, greater than 90% of the styrene was recovered. Several commercial margarines were examined. The method and results of the migration studies are presented. There was no detectable migration of styrene into margarine.

Headspace Sampling and Gas Chromatographic Determination of Styrene Migration from Food-Contact Polystyrene Cups into Beverages and Food Simulants

1981 ◽  
Vol 64 (5) ◽  
pp. 1122-1130 ◽  
Author(s):  
Sandra L Varner ◽  
Charles V Breder
Keyword(s):  
Gas Chromatography ◽  
Room Temperature ◽  
Detection Limits ◽  
Chromatographic Determination ◽  
Headspace Sampling ◽  
Ionization Detector ◽  
Migration Studies ◽  
Flame Ionization ◽  
And Storage

Abstract Migration studies using coffee, tea, water, and 8% ethanol were conducted with various types of foodcontact polystyrene cups. Study conditions simulated filling and storage at room temperature and hot-filling or pasteurization above 150°F (65.6°C). The quantity of styrene migrating was determined by headspace sampling and gas chromatography (GC). The GC column was 6% Carbowax 20M on Chromosorb 101 with quantitation via a flame ionization detector. Detection limits ranged from 3 to 10 ppb in various liquids. The method and results of the migration studies are presented.

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